EverTune.com : Official home of EverTune, the patented guitar bridge that keeps guitar strings in tune at all times with constant tension

Traditional guitar bridges simply can’t adapt to varying string tension. The strings stretch, the tuner posts unwind, and the guitar must be constantly re-tuned.

How does EverTune work?

EverTune is based on simple mechanical principles. The EverTune bridge connects your guitar strings to an adaptive spring-tensioner inside the guitar body.

As each string or tuner posts loosens, the springs compensate, maintaining exactly the tension you set the first time you tuned the guitar, no matter how hard or how often you play.

You’ll never again have to re-tune your guitar…unless you want to! Prefer alternative tunings? Easy! Tune or re-string your EverTune just like a regular guitar. Want to bend your notes? You can do that too! With EverTune, you are in control!

Audiophiles and studio producers will notice improved tone quality and consistency on EverTuned guitars, which can dramatically simplify recording and post-production! (See what these recording pros have to say about EverTune.)

Check out this demo video on how to string and tune your EverTuned guitar…or skip down to the Frequently Asked Questions below…

Evertune Instructions: Stringing, Tuning, Bends

Step 1: STRINGING
The Evertune bridge is strung from the rear of the guitar, similar to a Fender Strat. Feed each string into the corresponding hole, out through the bridge, over the saddle, and attach it to the tuning peg at the headstock.

Step 2: TENSIONING
As you tighten the tuning peg at the headstock, watch the SADDLE. As soon as the saddle starts to rise, tighten the tuning pegs 2 more full rotations.

Step 3: STRETCHING
Once you have tensioned a string, firmly press down on it about an inch from the saddle. Repeat a few times. This stretches the string around the saddle, which makes the tuning even more reliable.
[Note: this step is optional but highly recommended.]

Step 4: TUNING
Plug the amp cable into a tuner and check your pitch. The EverTune bridge is not tuned from the “tuning pegs.” Tuning is done using the hex nuts on the SADDLE (just behind/below where the string comes through the saddle). Insert the hex key into the hex nut on the saddle. Turning the hex key clockwise raises pitch, counterclockwise lowers pitch (righty tighty lefty loosey).
[Note: When you pluck the strings, keep your fingers off the hex key. The saddle is floating, so if the hex key is bumped or pressed, it will act like a mini whammy bar.]

Step 5: BENDING NOTES
If you try to bend with your newly tuned EverTune, you may notice that bends aren’t changing pitch. EverTune maintains pitch within a narrow range, so if you want to bend, tune the guitar just to the edge of that range (we call it the “Bend Stop”) so bends can push the pitch “out of tune.”
HERE’S HOW: While plucking the string, turn the tuning peg at the headstock in the tightening direction until the pitch rises. Then loosen the tuning peg until the string is exactly back in tune. Now test your bends. They should feel pretty natural.
[Note: to prevent “accidental bends” you may want to loosen the tuning peg about a quarter turn more. This will filter out accidentally going sharp from hard fretting. Alternatively, a lead player can set the top strings to bend instantly for solos and the bottom strings to bend a hair later so that bass lines are in tune even when the fatter strings get over-pulled while fretting.]

Step 6: ALTERNATE-TUNING
To change the tuning (e.g. going from conventional to drop D), while plucking the string, turn the tuning pegs at the headstock in the tightening direction until the pitch starts to rise. Then turn the tuning pegs at the headstock back in the loosening direction 2 times. Now use Step 4 and Step 5 to re-tune the string however you want.

See how EverTune is already changing the lives of professional musicians…

Frequently Asked Question

Can you bend notes with EverTune?
Yes, when properly set up (which is simple), EverTuned guitars bend and trem like normal guitars.

Is it electric?
The Evertune bridge is all mechanical, consisting of one spring for each string. It never needs batteries and nothing is “automated”. The player hand-tunes and the bridge holds the tension (tune) set by the player indefinitely…until restringing or deliberate tuning (for alternate keys)

Is it like the Robot Guitar® and other auto tune guitar systems?
Evertune is unique. Auto Tuning systems re-tune guitars when they are activated by the player, but guitars with auto tuners go out of tune during play, like any other guitar. We keep the guitar always in tune.

Can it tune to any tunings and detune?
Yes, the player sets the tune like a normal guitar.

How does EverTune “know” how to hold tune if it’s all mechanical?
EverTune is a totally passive system. All it does is pull the string with the same tension, regardless of the string’s expansion or contraction. We use a compact spring suspension system to accomplish this. The tuners on the EverTune bridge increase or decrease the tension with which the strings are pulled.

Does EverTune REALLY stay perfectly in tune?
In current tests of our older prototypes and early production models, after one to two weeks, we might see a few strings go about 5 cents flat. However, the vast majority of strings on EverTuned guitars are perfectly in tune for the life of the string, through all sorts of conditions and styles of play.

EverTune is a work in progress, and we continue to refine it based on feedback from our beta testers, so even this may be improved before commercial release.

Will it be available for other instruments?
Yes. First guitar, and then bass.

Can it be a B-bender?
Yes it works very well as a B-bender. This is also currently in development.

Is it available for 7 string guitars?
The six string model is standard, the 7 string will be custom, but will be available.

How much wood does it take out?
The style with which we are launching will have about the same size rout as the trem pocket for a strat, but just a tad deeper.

How much does it cost?
We are working diligently to make these bridges an affordable product. They will cost much less than servo-motor based auto tuner guitars such as the Robot Guitar®.

Will it be available in different colors?
Yes, we are currently working on Gold Chrome, Black Chrome, Chrome, and Nickel.

Is it a trem/floating bridge or a fixed bridge?
The EverTune bridge plays like a fixed bridge. In terms of tone, it is on par with a hard tail/fixed bridge.

However, each string is suspended by a spring, and the saddle is floating, so in terms of attack and sustain, it may be more similar to a trem/floating bridge.

Any plans for a trem version?
Yes, we will have a trem version in the future.

Does the spring suspension system affect tone and sustain?
Every change to any bridge affects tone and sustain. We have gone to great lengths to use good tonal materials such as brass to get a tone that we think is great.

Strings attached to springs resonate only 75%-80% as long and usually have a softer attack because some of the resonant energy bleeds into the springs. To compensate, we developed spring buffers, a great saddle design, and lots of brass.

As a result, EverTune’s attack and sustain are as good as other floating bridges, and the tone may be louder and brighter than a stock bridge.

If the saddles move to keep the tension constant, does this affect intonation?
Theoretically, when saddles move, they change string length, which changes intonation. But during normal use of the EverTune bridge, the saddles don’t move far enough to affect intonation.

In our tests* of the EverTune bridge, a saddle had to move AT LEAST 0.75mm before there was a measurable change in intonation (about 5 cents at the 17th fret). 0.75mm is a HUGE change, nearly impossible to recreate in normal play. How impossible? On a standard guitar, if the low E string of a set of 010s changes length by just 0.25 mm, it will go out of tune a WHOLE STEP (e.g. an E would drop to a D). That just doesn’t happen in the real world–and it would take THREE TIMES as much detuning to make a noticeable intonation difference on an EverTune bridge.

In other words: conditions that would create a noticeable (5 cents at the 17th fret) intonation difference with EverTune would cause a normal guitar to be 3 WHOLE steps flat!

*tests performed using 010 gauge strings on a Mexican Telecaster.

Is EverTune necessary? Shouldn’t real guitarists be able to keep in tune?
Can rock gods rock out WITHOUT EverTune? Of course. A car without a suspension still gets where it’s going. The suspension just smooths the ride.

An experienced guitarist with quality hardware and a good set of pre-stretched strings will be in tune throughout a song, even a whole set, 90% of the time, assuming nothing accidentally bumps the tuning pegs. A pro can tune a regular guitar in just seven seconds after a song is over, but if he has a really good ear, he’ll hear when he is starting to go out of tune, and that’s usually DURING the song.

With the EverTune bridge, that same guitarist will be in tune 99.9% of the time, even if someone bumps the tuning peg, even if he uses cheap hardware, and even if he uses a freshly-changed set of strings. And when instruments are perfectly in tune, they sound really GOOD.

Being in tune also saves time for live acts. Sick Puppies report being able to play one more song per set (using one of EverTune’s oldest prototypes) because they save the time that used to be spent tuning after every song or switching guitars offstage. And their guitar tech says that EverTune makes his life much easier and less stressful. :-)

Is restringing and re-tuning harder or easier with EverTune? How does it compare to a Floyd Rose bridge?
EverTune strings exactly like a regular guitar. Unlike a Floyd/floating trem, if one string breaks, the others stay in tune.

Stringing and tuning a Floyd can take around 30 minutes because the tuning has to be done two or three times before it’s ready to lock.

EverTune actually strings FASTER than a conventional guitar because the system retains the same tension from before the old string broke, so the new string is in tune from the get go. That’s right: no more waiting times for the strings to stretch before they finally hold tune!